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J/A+A/305/551       Chemical composition of the s-Cepheids (Andrievsky+, 1996)

The chemical composition of the s-Cepheids. II Andrievsky S.M., Kovtyukh V.V, Usenko I.A. <Astron. Astrophys. 305, 551 (1996)> =1996A&A...305..551A (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Abundances ; Keywords: stars: abundances - stars: Cepheids - stars: evolution Description: On the base of photographic, Reticon and CCD spectra analysis we have derived the abundances for 8 s-Cepheids and V1162 Aql (before classified as s-Cepheid). The following results have been obtained: 1) all Cepheids (excluding only EU Tau) have solar-like abundances of α- and iron-group elements, 2) Na is over abundant for all program stars, 3) the carbon deficiency found for EU Tau, DT Cyg, V440 Per and nitrogen overabundance (DT Cyg), show that these s-Cepheids are not crossing the instability strip for first time, 4) s-process elements are slightly enhanced in the program stars, 5) V1162 Aql does not show any changes in C and N abundances. The most plausible explanation is that this star is a normal Cepheid (Cδ), but it is firstly crossing the instability strip toward the giant branch. This conclusion is also confirmed by its position on the evolutionary diagram. Objects: -------------------------------------------- RA (2000) DE Names -------------------------------------------- 02 23 51.7 +55 21 53 V440 Per = HD 14662 02 51 58.7 +68 53 19 SU Cas = HD 17463 04 37 14.7 +18 32 35 SZ Tau = HD 29260 05 45 40.5 +18 39 25 EU Tau = HD 38321 17 52 38.6 -06 08 37 Y Oph = HD 162714 18 58 14.6 +17 21 40 FF Aql = HD 176155 21 06 30.1 +31 11 05 DT Cyg = HD 201078 21 19 22.1 +38 14 15 V1334 Cyg = HD 203156 -------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table10 40 25 Abundances for SU Cas. table11 46 19 Abundances for EU Tau. table12 54 35 Abundances for DT Cyg. table13 34 15 Abundances for SZ Tau. table14 20 26 Abundances for V 1334 Cyg. table15 34 25 Abundances for FF Aql. table16 20 25 Abundances for V1162 Aql. table17 67 28 Abundances for V440 Per. table18 20 26 Abundances for Y Oph. tables.tex 69 375 LaTeX version of tables
Byte-by-byte Description of file: table10
Bytes Format Units Label Explanations
2- 6 A5 --- Element Element 8- 12 F5.2 [Sun] [X/H]1 Abundance of the element for phase=0.477 14- 17 F4.2 [Sun] e_[X/H]1 []? Error on abundance 19- 20 I2 --- o_[X/H]1 Number of observations 22- 26 F5.2 [Sun] [X/H]2 Abundance of the element for phase=0.627 28- 31 F4.2 [Sun] e_[X/H]2 []? Error on abundance 33- 34 I2 --- o_[X/H]2 Number of observations 36- 40 F5.2 [Sun] [X/H]LL81 []? Abundance of the element from Luck and Lambert 1981
Byte-by-byte Description of file: table11
Bytes Format Units Label Explanations
2- 6 A5 --- Element Element 8- 12 F5.2 [Sun] [X/H]1 []? Abundance of the element for phase=0.297 14- 17 F4.2 [Sun] e_[X/H]1 []? Error on abundance 19 I1 --- o_[X/H]1 []? Number of observations 21- 25 F5.2 [Sun] [X/H]2 []? Abundance of the element for phase=0.323 27- 30 F4.2 [Sun] e_[X/H]2 []? Error on abundance 32- 33 I2 --- o_[X/H]2 []? Number of observations 35- 39 F5.2 [Sun] [X/H]3 []? Abundance of the element for phase=0.758 41- 44 F4.2 [Sun] e_[X/H]3 []? Error on abundance 46 I1 --- o_[X/H]3 []? Number of observations
Byte-by-byte Description of file: table12
Bytes Format Units Label Explanations
2- 6 A5 --- Element Element 8- 12 F5.2 [Sun] [X/H]1 []? Abundance of the element for phase=0.155 14- 17 F4.2 [Sun] e_[X/H]1 []? Error on abundance 19- 20 I2 --- o_[X/H]1 []? Number of observations 22- 26 F5.2 [Sun] [X/H]2 []? Abundance of the element for phase=0.774 28- 31 F4.2 [Sun] e_[X/H]2 []? Error on abundance 33- 34 I2 --- o_[X/H]2 []? Number of observations 36- 40 F5.2 [Sun] [X/H]3 []? Abundance of the element for phase=0.814 42- 45 F4.2 [Sun] e_[X/H]3 []? Error on abundance 47- 48 I2 --- o_[X/H]3 []? Number of observations 50- 54 F5.2 [Sun] [X/H]LL81 []? Abundance of the element from Luck and Lambert 1981
Byte-by-byte Description of file: table13
Bytes Format Units Label Explanations
2- 6 A5 --- Element Element 8- 12 F5.2 [Sun] [X/H]1 []? Abundance of the element for phase=0.119 14- 17 F4.2 [Sun] e_[X/H]1 []? Error on abundance 19- 20 I2 --- o_[X/H]1 []? Number of observations 22- 26 F5.2 [Sun] [X/H]2 []? Abundance of the element for phase=0.501 28- 31 F4.2 [Sun] e_[X/H]2 []? Error on abundance 33- 34 I2 --- o_[X/H]2 []? Number of observations
Byte-by-byte Description of file: table14, table16, table18
Bytes Format Units Label Explanations
2- 6 A5 --- Element Element 8- 12 F5.2 [Sun] [X/H] Abundance of the element 14- 17 F4.2 [Sun] e_[X/H] []? Error on abundance 19- 20 I2 --- o_[X/H] Number of observations
Byte-by-byte Description of file: table15
Bytes Format Units Label Explanations
2- 6 A5 --- Element Element 8- 12 F5.2 [Sun] [X/H]1 []? Abundance of the element for phase=0.780 14- 17 F4.2 [Sun] e_[X/H]1 []? Error on abundance 19- 20 I2 --- o_[X/H]1 []? Number of observations 22- 26 F5.2 [Sun] [X/H]2 []? Abundance of the element for phase=0.864 28- 31 F4.2 [Sun] e_[X/H]2 []? Error on abundance 33- 34 I2 --- o_[X/H]2 []? Number of observations
Byte-by-byte Description of file: table17
Bytes Format Units Label Explanations
2- 6 A5 --- Element Element 8- 12 F5.2 [Sun] [X/H]1 []? Abundance of the element for phase=0.080 14- 17 F4.2 [Sun] e_[X/H]1 []? Error on abundance 19- 20 I2 --- o_[X/H]1 []? Number of observations 22- 26 F5.2 [Sun] [X/H]2 []? Abundance of the element for phase=0.218 28- 31 F4.2 [Sun] e_[X/H]2 []? Error on abundance 33 I1 --- o_[X/H]2 []? Number of observations 35- 39 F5.2 [Sun] [X/H]3 []? Abundance of the element for phase=0.374 41- 44 F4.2 [Sun] e_[X/H]3 []? Error on abundance 46- 47 I2 --- o_[X/H]3 []? Number of observations 49- 53 F5.2 [Sun] [X/H]4 Abundance of the element for phase=0.385 55- 58 F4.2 [Sun] e_[X/H]4 []? Error on abundance 60- 61 I2 --- o_[X/H]4 Number of observations 63- 67 F5.2 [Sun] [X/H]L82 []? Abundance of the element from Luck 1982
References: Luck R.E. and Lambert D.L. 1981, ApJ, 245, 1018 =1981ApJ...245.1018L Luck R.E. 1982, ApJ, 259, 792 =1982ApJ...259..792L
(End) Simona Mei [CDS] 07-Jun-1995
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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